Missing an old feature using vertices

[bazooka]

Holidays excuse for slow reply.

Nope that's not it. This feature extended into empty space from an existing object. You could axis constrain or go free, but it created a winged-edge from one click to the next. Perhaps one of the old-timers recalls it as there was discussion on the old forum (search there is hopeless). It seems like 2003/2004? I have lost the things I made with it, but I clearly recall extruding the center edges to create what I wanted. It saved considerable workaround to get clean geometry.